The Extron XPA U 4004 FX is an ENERGY STAR qualified, four-channel, high-performance audio power amplifier that can deliver 400 watts simultaneously into 8 ohm, 4 ohm, 70 volt, and 100 volt loads in multi-zone systems. Rotary switches on the rear panel make it quick and easy to independently select an output mode per channel to power each zone. This highly efficient amplifier includes ECO Standby with InstaWake+ that transparently and automatically maximizes the time in its lowest power state, for the most energy savings possible. For maximum flexibility, the total power of two adjacent 400 watt channels is shared, delivering up to 800 watts per single channel, according to system requirements. The fan-cooled enclosure does not require adjacent empty rack spaces and includes front and rear rack mount hardware for stability.

Configurable Output Modes and Flexible Power Allocation

Output modes can be independently configured per channel for 8 ohm, 4 ohm, 70 volt or 100 volt operation, with the option of adding a high pass filter in 70V or 100V mode. This allows a single XPA U 4004 FX amplifier to drive multiple types of speakers simultaneously, saving cost and space.

The total power of each odd/even channel pair is shared between the two channels. This adds to the multi-zone flexibility of the XPA U 4004 FX by allowing a single amplifier to meet the SPL requirements of multiple speaker zones.

The combination of flexible power allocation and configurable output modes allows a single XPA U 4004 FX to accommodate a high power stereo pair of low impedance speakers in addition to multiple zones of 70V or 100V speakers.

InstaWake+ with Intelligent ECO Standby

The XPA U 4004 FX includes intelligent ECO Standby technology that places the amplifier into standby after just a few seconds of inactivity. When in standby, it draws under one watt of power. When signal is detected, it comes out of standby in under 5 milliseconds, fast enough that even the sharpest beginning of audio is not cut off. This exclusive Extron technology transparently maximizes the amplifier's time in its lowest power state to conserve more power than ever before. For applications where the amplifier is required to remain active at all times, the auto-standby and ECO Standby features can be easily and independently disabled.

Compact Installations

The fan-cooled XPA U 4004 FX doesn't require adjacent empty rack spaces for cooling, allowing it to consume less rack space than competing amplifiers. Combined with hundreds of precise design choices, this enables many XPA U 4004 FX units to be efficiently stacked in an equipment rack.

Designed by Extron

All circuits in an Extron power amplifier are designed by our team of dedicated power amplifier engineers, ensuring that each model meets or exceeds our high standards of excellence. By designing everything in-house, Extron engineers can meticulously and effectively optimize for maximum performance, reliability, power efficiency, and reduced heat.

Rock-Solid Reliability

Product reliability is a high priority at Extron and we go to great lengths to engineer products with industry-leading low failure rates, driven by rigorous testing of everything we ship. The elimination of short-lived electrolytic capacitors in the signal path,  PCB designs that exclude the use of failure-prone wire harnesses, the use of long life fans, and accelerated burn-in testing ensure the XPA U 4004 FX will provide many years of service.